Wireless communication method for determining spatial relation and power control parameter for uplink signals

ABSTRACT

Method, systems and devices for determining spatial relation and power control parameter for uplink signals. The method for use in a wireless terminal comprises determining at least one of at least one power control parameter or spatial relation for a first uplink signal on a first component carrier, and transmitting, to a wireless network node, the first uplink signal on the first component carrier based on at least one of determined at least one power control parameter or determined spatial relation.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of priority under 35 U.S.C. § 120 asa continuation of PCT Patent Application No. PCT/CN2019/116385, filed onNov. 7, 2019, the disclosure of which is incorporated herein byreference in its entirety.

TECHNICAL FIELD

This document is directed generally to wireless communications, and moreparticularly to a wireless communication method for determining spatialrelation and power control parameter for uplink signals.

BACKGROUND

As the expense of wide or ultra-wide spectrum resources, theconsiderable propagation loss induced by an extremely high frequencybecomes a noticeable challenge. To solve this issue, an antenna arrayand beam-forming (BF) training technologies using massivemultiple-input-multiple-output (MIMO), e.g., up to 1024 antenna elementsfor one node, have been adopted to achieve the beam alignment and obtaina sufficiently high antenna gain. In addition, in order to keep lowimplementation cost while still benefit from the antenna array, analogphase shifters become very attractive for implementing the mmWavebeam-forming. When adopting the analog phase shifters, the number ofcontrollable phases becomes finite and the constant modulus constraintsare placed on these antenna elements. Given the pre-specified beampatterns, the variable-phase-shift-based BF training targets to identifythe best pattern for subsequent data transmission generally. FIG. 1shows a schematic diagram of a case with one transmission-receptionpoint (TRP) and one user equipment (UE). In FIG. 1 , the beams coveredby full black color are selected for transmissions based onuplink/downlink transmissions.

SUMMARY

In 5G new radio (NR), the analog beam-forming is firstly introduced intomobile communication for guaranteeing the robustness of high frequencycommunications. The corresponding analog beam-forming indication (alsocalled as beam indication) involves both downlink (DL) and uplink (UL)transmissions. For the UL transmissions, spatial relation informationwhich is configured by a new higher layer parameter spatialRelationInfohas been introduced for supporting beam indication for a UL controlchannel, i.e., physical uplink control channel (PUCCH), and a soundingreference signal (SRS). Besides, beam indications for a UL data channel,i.e., physical uplink shared channel (PUSCH), is achieved throughmapping between one or more SRS resources, which are indicated by a NRbase station (i.e. gNB), and antenna ports of the UL data channel. Thatis, the beam configuration for UL data channel can be derived from thespatial relation information association/mapping information between theSRS resources and antenna ports accordingly. However, introducing thenew high layer parameter for supporting the beam indication may increasethe overhead of the higher layer parameters.

This document relates to methods, systems, and devices for determiningspatial relation and power control parameter for uplink signals.

The present disclosure relates to a wireless communication for use in awireless terminal. The wireless communication method comprises:

determining at least one of at least one power control parameter orspatial relation for a first uplink signal on a first component carrier,and

transmitting, to a wireless network node, the first uplink signal on thefirst component carrier based on at least one of determined at least onepower control parameter or determined spatial relation.

Various embodiments may preferably implement the following features:

Preferably, when a transmission configuration indicator, TCI, state hasa plurality of reference signal, RS, indexes, an RS index associatedwith a Quasi co-location, QCL, Type of a spatial parameter is used fordetermining at least one of the at least one power control parameter orthe spatial relation of the first uplink signal.

Preferably, the at least one power control parameter comprises apath-loss RS, the first uplink signal comprises at least one physicaluplink control channel, PUCCH, and the wireless terminal receives amedium access control, MAC, control element, CE, for updating apath-loss RS of the at least one PUCCH.

Preferably, the spatial relation is determined based on at least onetransmission parameter associated with a downlink signal on the firstcomponent carrier.

Preferably, the first uplink signal comprises at least one of a soundingreference signal, SRS, a physical uplink shared channel, PUSCH, or aPUCCH.

Preferably, the at least one transmission parameter comprises at leastone of a spatial domain filter, a transmission configuration indicator,TCI, state or a Quasi co-location, QCL, assumption.

Preferably, when the first component carrier is configured with at leastone control resource set, CORESET, the spatial relation of the firstuplink signal is determined based on the at least one transmissionparameter of a CORESET with the lowest index within the at least oneCORESET.

Preferably, the CORESET with the lowest index and the first uplinksignal are associated with the same CORESET pool index or the sameCORESET group.

Preferably, when the first component carrier is not configured with aCORESET, the spatial relation of the first uplink signal is determinedbased on a TCI state with the lowest index within at least one TCI stateactivated for the downlink signal.

Preferably, when the at least one TCI state for the downlink signal isnot configured or activated, the spatial relation of the first uplinksignal is determined based on the at least one transmission parameter ofa CORESET or a PDCCH, and the CORESET or the PDCCH schedules the firstuplink signal.

Preferably, the first uplink signal comprises at least one physicaluplink control channel, PUCCH, and the at least one power controlparameter comprises at least one of a target power, a closed loop indexor a path-loss reference signal, RS, of the at least one PUCCH.

Preferably, the target power of the at least one PUCCH is determined byan entry having one of a specific index, the highest index or the lowestindex in a target power set.

Preferably, the closed loop index of the at least one PUCCH is one of aspecific index, the highest index or the lowest index within a range ofthe closed loop index.

Preferably, the closed loop index of the at least one PUCCH isdetermined based on a TCI state applied to a CORESET with the lowestindex within at least one CORESET or a TCI state with the lowest indexwithin at least one TCI state activated for a downlink signal on thefirst component carrier.

Preferably, when the first component carrier is configured with at leastone CORESET, the path-loss RS of the at least one PUCCH is determinedbased on an RS of a TCI state applied for a CORESET with the lowestindex within the at least one CORESET or a QCL assumption for theCORESET with the lowest index within the at least one CORESET.

Preferably, the path-loss RS of the at least one PUCCH is determinedbased on an RS of a TCI state with the lowest index within at least oneTCI state activated for a downlink signal on the first componentcarrier.

Preferably, the first component carrier is not configured with aCORESET.

Preferably, the first uplink signal comprises at least one SRS, and theat least one power control parameter comprises at least one of a targetpower, a scaling factor, a power control adjustment state or a path-lossRS of the at least one SRS.

Preferably, at least one of the target power or the scaling factor ofthe at least one SRS is determined based on a SRS resource setconfigured by at least one higher layer parameter.

Preferably, the power control adjustment state of the at least one SRSis set to be the same with a power control adjustment state of atransmission of a physical uplink shared channel, PUSCH.

Preferably, when the first component carrier is configured with at leastone CORESET, the path-loss RS of the at least one SRS is determinedbased on an RS of a TCI state applied for a CORESET with the lowestindex within the at least one CORESET or a QCL assumption for theCORESET with the lowest index within the at least one CORESET.

Preferably, the path-loss RS of the at least one SRS is determined basedon an RS of a TCI state with the lowest index within at least one TCIstate activated for a downlink signal on the first component carrier.

Preferably, the first component carrier is not configured with aCORESET.

Preferably, the first uplink signal comprises at least one PUSCH, andthe at least one power control parameter comprises at least one of atarget power, a scaling factor, a closed loop index or a path-loss RS ofthe at least one PUSCH.

Preferably, wherein the target power of the at least one PUSCH isdetermined by an entry having one of a specific index, the highest indexor a lowest index in a target power set or a mapping set between SRSresource indicator (SRI) and PUSCH power control parameters.

Preferably, the scaling factor of the at least one PUSCH is determinedby an entry having one of a specific index, the highest index or alowest index in a scaling factor set or a mapping set between SRI andPUSCH power control parameters.

Preferably, the closed loop index of the at least one PUSCH is one of aspecific index, the highest index or the lowest index within a range ofthe closed loop index.

Preferably, the path-loss RS of the at least one PUSCH is determinedaccording to a path-loss RS which is associated with a SRS associatedwith the at least one PUSCH.

Preferably, the at least one PUSCH is not configured with the path-lossRS.

Preferably, the first uplink signal is not configured with the spatialrelation.

Preferably, the first uplink signal is not configured with the at leastone power control parameter.

Preferably, the first uplink signal comprises at least one of a SRS, aPUSCH or a PUCCH, and the at least one power control parameter comprisesa path-loss RS.

Preferably, the first uplink signal comprises at least one PUSCH, andthe at least one power control parameter comprises a path-loss RS of aSRS associated with the at least one PUSCH.

Preferably, the first uplink signal comprises at least one PUSCH, and

Preferably, the SRS for a non-codebook transmission or a codebooktransmission is not configured with a path-loss RS.

Preferably, the wireless terminal receives a MAC-CE activation commandfor activating a TCI state or receives a configuration command for a TCIstate.

Preferably, the wireless terminal receives a MAC CE activation commandfor activating or updating the at least one power control parameter orreceives a configuration command for the at least one power controlparameter, and the at least one power control parameter comprises atleast one of a target power, a scaling factor or a closed loop index.

Preferably, the wireless communication method further comprisesreceiving a signaling configured to determine the at least one powercontrol parameter for the first uplink signal.

Preferably, the first uplink signal comprises at least one PUCCH, andspatial relation of the at least one PUCCH is not configured

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, at least one of the spatial relation or apath-loss RS of the first uplink signal is determined based on at leastone of the spatial relation or the path-loss RS of the second uplinksignal.

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, the first uplink signal is prioritized foruplink transmission.

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, refraining the second uplink signal fromuplink transmission.

Preferably, an index of the first component carrier is smaller than anindex of the second component carrier.

Preferably, when an index of the first component carrier is higher thanan index of the second component carrier.

Preferably, the first component carrier is configured with at least oneCORESET and the second component carrier is not configured with aCORESET.

Preferably, the first component carrier is not configured with a CORESETand the second component carrier is configured with at least oneCORESET.

Preferably, the first component carrier and the second component carrierare within a component carrier group or a bandwidth part.

Preferably, the at least one of at least one power control parameter orspatial relation of the first uplink signal is determined based on atleast one of transmission parameter of a downlink signal.

Preferably, the downlink signal is determined according to the slotoverlapping with the first uplink signal.

Preferably, the downlink signal is a CORESET with the lowest indexwithin at least one CORESET in the latest slot no later than a slotoverlapping with the first uplink signal.

Preferably, the slot overlapping with the first uplink signal is thefirst slot overlapping with the first uplink signal or the first slotfully overlapping with the first uplink signal.

Preferably, the slot overlapping with the first uplink signal is thelast slot overlapping with the slot of the first uplink signal or thelast slot fully overlapping with the slot of first uplink signal.

Preferably, the first uplink signal is transmitted in a slot n, whereinthe downlink signal is transmitted in a slot m, and wherein m is lessthan or equal to

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu}UL} \rfloor},$

wherein μ_(DL) is a subcarrier spacing of a downlink signal or adownlink slot, and wherein μ_(UL) is a subcarrier spacing of a uplinksignal or a uplink slot.

Preferably, the first uplink signal is transmitted in the slot n,wherein the downlink signal is transmitted in the latest slot no latterthan a slot

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu_{UL}}} \rfloor},$

wherein μ_(DL) is a subcarrier spacing for a downlink signal or adownlink slot, and wherein μ_(UL) is a subcarrier spacing for a uplinksignal or a uplink slot.

The present disclosure relates to a wireless communication method foruse in a wireless network node. The wireless communication methodcomprises receiving, from a wireless terminal, a first uplink signal ona first component carrier, based on at least one of at least one powercontrol parameter or spatial relation of the first uplink signal.

Various embodiments may preferably implement the following features:

Preferably, when a transmission configuration indicator, TCI, state hasa plurality of reference signal, RS, indexes, an RS index associatedwith a Quasi co-location, QCL, Type of a spatial parameter is used fordetermining at least one of the at least one power control parameter orthe spatial relation of the first uplink signal.

Preferably, the at least one power control parameter comprises apath-loss RS, the first uplink signal comprises at least one physicaluplink control channel, PUCCH, and the wireless network node transmits amedium access control, MAC, control element, CE, for updating apath-loss RS of the at least one PUCCH.

Preferably, the spatial relation is determined based on at least onetransmission parameter associated with a downlink signal on the firstcomponent carrier.

Preferably, the first uplink signal comprises at least one of a soundingreference signal, SRS, a physical uplink shared channel, PUSCH, or aPUCCH.

Preferably, the at least one transmission parameter comprises at leastone of a spatial domain filter, a transmission configuration indicator,TCI, state or a Quasi co-location, QCL, assumption.

Preferably, when the first component carrier is configured with at leastone control resource set, CORESET, the spatial relation of the firstuplink signal is determined based on the at least one transmissionparameter of a CORESET with the lowest index within the at least oneCORESET.

Preferably, the CORESET with the lowest index and the first uplinksignal are associated with the same CORESET pool index or the sameCORESET group.

Preferably, when the first component carrier is not configured with aCORESET, the spatial relation of the first uplink signal is determinedbased on a TCI state with the lowest index within at least one TCI stateactivated for the downlink signal.

Preferably, when the at least one TCI state for the downlink signal isnot configured or activated, the spatial relation of the first uplinksignal is determined based on the at least one transmission parameter ofa CORESET or a PDCCH, and the CORESET or the PDCCH schedules the firstuplink signal.

Preferably, the first uplink signal comprises at least one physicaluplink control channel, PUCCH, and the at least one power controlparameter comprises at least one of a target power, a closed loop indexor a path-loss reference signal, RS, of the at least one PUCCH.

Preferably, the target power of the at least one PUCCH is determined byan entry having one of a specific index, the highest index or the lowestindex in a target power set.

Preferably, the closed loop index of the at least one PUCCH is one of aspecific index, the highest index or the lowest index within a range ofthe closed loop index.

Preferably, the closed loop index of the at least one PUCCH isdetermined based on a TCI state applied to a CORESET with the lowestindex within at least one CORESET or a TCI state with the lowest indexwithin at least one TCI state activated for a downlink signal on thefirst component carrier.

Preferably, when the first component carrier is configured with at leastone CORESET, the path-loss RS of the at least one PUCCH is determinedbased on an RS of a TCI state applied for a CORESET with the lowestindex within the at least one CORESET or a QCL assumption for theCORESET with the lowest index within the at least one CORESET.

Preferably, the path-loss RS of the at least one PUCCH is determinedbased on an RS of a TCI state with the lowest index within at least oneTCI state activated for a downlink signal on the first componentcarrier.

Preferably, the first component carrier is not configured with aCORESET.

Preferably, the first uplink signal comprises at least one SRS, and theat least one power control parameter comprises at least one of a targetpower, a scaling factor, a power control adjustment state or a path-lossRS of the at least one SRS.

Preferably, at least one of the target power or the scaling factor ofthe at least one SRS is determined based on a SRS resource setconfigured by at least one higher layer parameter.

Preferably, the power control adjustment state of the at least one SRSis set to be the same with a power control adjustment state of atransmission of a physical uplink shared channel, PUSCH.

Preferably, when the first component carrier is configured with at leastone CORESET, the path-loss RS of the at least one SRS is determinedbased on an RS of a TCI state applied for a CORESET with the lowestindex within the at least one CORESET or a QCL assumption for theCORESET with the lowest index within the at least one CORESET.

Preferably, the path-loss RS of the at least one SRS is determined basedon an RS of a TCI state with the lowest index within at least one TCIstate activated for a downlink signal on the first component carrier.

Preferably, the first component carrier is not configured with aCORESET.

Preferably, the first uplink signal comprises at least one PUSCH, andwherein the at least one power control parameter comprises at least oneof a target power, a scaling factor, a closed loop index or a path-lossRS of the at least one PUSCH.

Preferably, the target power of the at least one PUSCH is determined byan entry having one of a specific index, the highest index or a lowestindex in a target power set or a mapping set between SRS resourceindicator (SRI) and PUSCH power control parameters.

Preferably, the scaling factor of the at least one PUSCH is determinedby an entry having one of a specific index, the highest index or alowest index in a scaling factor set or a mapping set between SRI andPUSCH power control parameters.

Preferably, the closed loop index of the at least one PUSCH is one of aspecific index, the highest index or the lowest index within a range ofthe closed loop index.

Preferably, the path-loss RS of the at least one PUSCH is determinedaccording to a path-loss RS which is associated with a SRS associatedwith the at least one PUSCH.

Preferably, the at least one PUSCH is not configured with the path-lossRS.

Preferably, the first uplink signal is not configured with the spatialrelation.

Preferably, the first uplink signal is not configured with the at leastone power control parameter.

Preferably, the first uplink signal comprises at least one of a SRS, aPUSCH or a PUCCH, and wherein the at least one power control parametercomprises a path-loss RS.

Preferably, the first uplink signal comprises at least one PUSCH, andthe at least one power control parameter comprises a path-loss RS of aSRS associated with the at least one PUSCH.

Preferably, the first uplink signal comprises at least one PUSCH, andthe SRS for a non-codebook transmission or a codebook transmission isnot configured with a path-loss RS.

Preferably, the wireless network node transmits a MAC-CE activationcommand for activating a TCI state or transmits a configuration commandfor a TCI state.

Preferably, the wireless network node transmits a MAC CE activationcommand for activating or updating the at least one power controlparameter or transmits a configuration command for the at least onepower control parameter, and the at least one power control parametercomprises at least one of a target power, a scaling factor or a closedloop index.

Preferably, the wireless communication method further comprisestransmitting, to the wireless terminal, a signaling configured todetermine the at least one power control parameter for the first uplinksignal.

Preferably, the first uplink signal comprises at least one PUCCH, and

Preferably, spatial relation of the at least one PUCCH is notconfigured.

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, at least one of the spatial relation or apath-loss RS of the first uplink signal is determined based on at leastone of the spatial relation or the path-loss RS of the second uplinksignal.

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, the first uplink signal is prioritized foruplink transmission.

Preferably, when a time unit of the first uplink signal on the firstcomponent carrier collides with a time unit of a second uplink signal ona second component carrier, the second uplink signal is refrained fromuplink transmission.

Preferably, an index of the first component carrier is smaller than anindex of the second component carrier.

Preferably, when an index of the first component carrier is higher thanan index of the second component carrier.

Preferably, the first component carrier is configured with at least oneCORESET and the second component carrier is not configured with aCORESET.

Preferably, the first component carrier is not configured with a CORESETand the second component carrier is configured with at least oneCORESET.

Preferably, the first component carrier and the second component carrierare within a component carrier group or a bandwidth part.

Preferably, the at least one of at least one power control parameter orspatial relation of the first uplink signal is determined based on atleast one of transmission parameter of a downlink signal.

Preferably, the downlink signal is determined according to the slotoverlapping with the first uplink signal.

Preferably, the downlink signal is a CORESET with the lowest indexwithin at least one CORESET in the latest slot no later than the slotoverlapping with the first uplink signal.

Preferably, the slot overlapping with the first uplink signal is thefirst slot overlapping with the first uplink signal or the first slotfully overlapping with the first uplink signal.

Preferably, the slot overlapping with the first uplink signal is thelast slot overlapping with the slot of the first uplink signal or thelast slot fully overlapping with the slot of first uplink signal.

Preferably, the first uplink signal is transmitted in a slot n, whereinthe downlink signal is transmitted in a slot m, and wherein m is lessthan or equal to

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu}UL} \rfloor},$

wherein μ_(DL) is a subcarrier spacing of a downlink signal or adownlink slot, and wherein μ_(UL) is a subcarrier spacing of a uplinksignal or a uplink slot.

Preferably, the first uplink signal is transmitted in the slot n,wherein the downlink signal is transmitted in the latest slot no latterthan a slot

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu_{UL}}} \rfloor},$

wherein μ_(DL) is a subcarrier spacing for a downlink signal or adownlink slot, and wherein μ_(UL) is a subcarrier spacing for a uplinksignal or a uplink slot.

The present disclosure relates to a wireless terminal. The wirelessterminal comprises:

a processor, configured to determine at least one of at least one powercontrol parameter or spatial relation for a first uplink signal on afirst component carrier; and

a communication unit, configured to transmit, to a wireless networknode, the first uplink signal on the first component carrier based onthe at least one of determined at least one power control parameter ordetermined spatial relation.

Various embodiments may preferably implement the following feature:

Preferably, the processor is further configured to perform the wirelesscommunication method of aforementioned wireless communication method.

The present disclosure relates to a wireless network node. The wirelessnetwork node comprises:

a communication unit, configured to receive, from a wireless terminal, afirst uplink signal on a first component carrier, wherein at least oneof at least one power control parameter or spatial relation of the firstuplink signal is associated with the first uplink signal.

Various embodiments may preferably implement the following feature:

Preferably, the wireless network node further comprises a processor,configured to perform the aforementioned wireless communication method.

The present disclosure relates to a computer program product comprisinga computer-readable program medium code stored thereupon, the code, whenexecuted by a processor, causing the processor to implement theaforementioned wireless communication method.

The exemplary embodiments disclosed herein are directed to providingfeatures that will become readily apparent by reference to the followingdescription when taken in conjunction with the accompany drawings. Inaccordance with various embodiments, exemplary systems, methods, devicesand computer program products are disclosed herein. It is understood,however, that these embodiments are presented by way of example and notlimitation, and it will be apparent to those of ordinary skill in theart who read the present disclosure that various modifications to thedisclosed embodiments can be made while remaining within the scope ofthe present disclosure.

Thus, the present disclosure is not limited to the exemplary embodimentsand applications described and illustrated herein. Additionally, thespecific order and/or hierarchy of steps in the methods disclosed hereinare merely exemplary approaches. Based upon design preferences, thespecific order or hierarchy of steps of the disclosed methods orprocesses can be re-arranged while remaining within the scope of thepresent disclosure. Thus, those of ordinary skill in the art willunderstand that the methods and techniques disclosed herein presentvarious steps or acts in a sample order, and the present disclosure isnot limited to the specific order or hierarchy presented unlessexpressly stated otherwise.

The above and other aspects and their implementations are described ingreater detail in the drawings, the descriptions, and the claims.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows a schematic diagram of a case of one PRP and one UE.

FIG. 2 shows an example of a schematic diagram of a wireless terminalaccording to an embodiment of the present disclosure.

FIG. 3 shows an example of a schematic diagram of a wireless networknode according to an embodiment of the present disclosure.

FIG. 4 shows a schematic diagram of a component carrier according to anembodiment of the present disclosure

FIG. 5 shows a schematic diagram of a component carrier according to anembodiment of the present disclosure.

FIG. 6 shows a schematic diagram of component carriers according to anembodiment of the present disclosure.

FIG. 7 shows a schematic diagram of uplink and downlink transmissionsaccording to an embodiment of the present disclosure.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

FIG. 2 relates to a schematic diagram of a wireless terminal 20according to an embodiment of the present disclosure. The wirelessterminal 20 may be a user equipment (UE), a mobile phone, a laptop, atablet computer, an electronic book or a portable computer system and isnot limited herein. The wireless terminal 20 may include a processor 200such as a microprocessor or Application Specific Integrated Circuit(ASIC), a storage unit 210 and a communication unit 220. The storageunit 210 may be any data storage device that stores a program code 212,which is accessed and executed by the processor 200. Embodiments of thestorage unit 212 include but are not limited to a subscriber identitymodule (SIM), read-only memory (ROM), flash memory, random-access memory(RAM), hard-disk, and optical data storage device. The communicationunit 220 may a transceiver and is used to transmit and receive signals(e.g. messages or packets) according to processing results of theprocessor 200. In an embodiment, the communication unit 220 transmitsand receives the signals via at least one antenna 222 shown in FIG. 2 .

In an embodiment, the storage unit 210 and the program code 212 may beomitted and the processor 200 may include a storage unit with storedprogram code.

The processor 200 may implement any one of the steps in exemplifiedembodiments on the wireless terminal 20, e.g., by executing the programcode 212.

The communication unit 220 may be a transceiver. The communication unit220 may as an alternative or in addition be combining a transmittingunit and a receiving unit configured to transmit and to receive,respectively, signals to and from a wireless network node (e.g. a basestation).

FIG. 3 relates to a schematic diagram of a wireless network node 30according to an embodiment of the present disclosure. The wirelessnetwork node 30 may be a base station (BS), a network entity, a MobilityManagement Entity (MME), Serving Gateway (S-GW), Packet Data Network(PDN) Gateway (P-GW), or Radio Network Controller (RNC), and is notlimited herein. The wireless network node 30 may include a processor 300such as a microprocessor or ASIC, a storage unit 310 and a communicationunit 320. The storage unit 310 may be any data storage device thatstores a program code 312, which is accessed and executed by theprocessor 300. Examples of the storage unit 312 include but are notlimited to a SIM, ROM, flash memory, RAM, hard-disk, and optical datastorage device. The communication unit 320 may be a transceiver and isused to transmit and receive signals (e.g. messages or packets)according to processing results of the processor 300. In an example, thecommunication unit 320 transmits and receives the signals via at leastone antenna 322 shown in FIG. 3 .

In an embodiment, the storage unit 310 and the program code 312 may beomitted. The processor 300 may include a storage unit with storedprogram code.

The processor 300 may implement any steps described in exemplifiedembodiments on the wireless network node 30, e.g., via executing theprogram code 312.

The communication unit 320 may be a transceiver. The communication unit320 may as an alternative or in addition be combining a transmittingunit and a receiving unit configured to transmit and to receive,respectively, signals to and from a wireless terminal (e.g. a userequipment).

Note that, in this disclosure, the definition of “beam” is equivalent toquasi-co-location (QCL) state, transmission configuration indicator(TCI) state, spatial relation state (also called as spatial relationinformation state), reference signal (RS), spatial filter or pre-coding.Specifically:

a) The definition of “Tx beam” is equivalent to a QCL state, a TCIstate, a spatial relation state, a DL/UL reference signal (such as achannel state information reference signal (CSI-RS), a synchronizationsignal block (SSB) (which is also called as SS/PBCH), a demodulationreference signal (DMRS), a sounding reference signal (SRS), and aphysical random access channel (PRACH)), a Tx spatial filter or a Txprecoding;

b) The definition of “Rx beam” is equivalent to a QCL state, a TCIstate, a spatial relation state, a spatial filter, a Rx spatial filteror a Rx precoding;

c) The definition of “beam ID” is equivalent to a QCL state index, a TCIstate index, a spatial relation state index, a reference signal index, aspatial filter index or a precoding index.

Specifically, “spatial filter” may be either UE-side or gNB-side, andthe spatial filter is also called as a spatial-domain filter.

Note that, in this disclosure, “spatial relation information” iscomprised of one or more reference RSs, which is used to represent thesame or quasi-co “spatial relation” between targeted “RS or channel” andthe one or more reference RSs.

Note that, in this disclosure, “spatial relation” means the beam,spatial parameter, or spatial domain filter.

Note that, in this disclosure, “QCL state” is comprised of one or morereference RSs and their corresponding QCL type parameters, where QCLtype parameters include at least one of the following aspect orcombination: (1) Doppler spread, (2) Doppler shift, (3) delay spread,(4) average delay, (5) average gain or (6) Spatial parameter.

In this disclosure, “TCI state” is equivalent to “QCL state”. In thisdisclosure, QCL type-D is equivalent to spatial parameter or spatial Rxparameter.

Note that, in this disclosure, a UL signal may be a PUCCH, a PUSCH, or aSRS.

Note that, in this disclosure, a time unit may be a sub-symbol, asymbol, a slot, a subframe, a frame, or a transmission occasion.

Note that, in this disclosure, the UL power control parameter includes atarget power (also called as P0), a path loss RS, a scaling factor forpath loss (also called as alpha), or a closed loop index.

Note that, in this disclosure, the path-loss may be a couple loss.

Note that, in this disclosure, the monitored DL slot is equivalent tothe slot with the monitoring CORESET, or the slot with PDCCH reception.

Note that, in this disclosure, the component carrier is equivalent to acell.

Note that, in this disclosure, “collide with” is equivalent to “overlapwith”, or “associated with”.

Note that, in this disclosure, the higher layer parameter is theparameter with a level higher than a L1 level (e.g. physical layer),e.g., a L2 level parameter, a L3 level parameter, or a radio resourcecontrol (RRC) parameter, or a medium access control (MAC) controlelement (CE) parameter, etc.

In order to decrease the overhead of the higher layer parameters, thepresent disclosure provides a wireless communication method for awireless terminal/wireless network node and for determining at least oneof at least one power control parameter or spatial relation of an uplink(UL) signal on a component without using the higher layer parameters ofconfiguring the spatial relation and/or the at least one power controlparameter.

In an embodiment, when a transmission configuration indicator, TCI,state has a plurality of reference signal, RS, indexes or a plurality ofquasi co-location, QCL, types, an RS index associated with a QCL Type ofa spatial parameter (i.e. QCL type D) is used for determining at leastone of the at least one power control parameter or the spatial relationof the UL signal.

In an embodiment, when the wireless terminal receives a medium accesscontrol, MAC, control element, CE, configured for updating a path-lossRS of at least one physical uplink control channel, PUCCH, in the ULsignal, the at least one power control parameter comprises at least thepath-loss RS. That is, when the wireless terminal receives the MAC CEconfigured for updating the path-loss RS of at least one PUCCH in the ULsignal, the wireless terminal determines the path-loss RS of the ULsignal without being configured by the higher layer parameter.

In an embodiment, the spatial relation of the UL signal is determinedwithout being configured by the higher layer parameter. In thisembodiment, the spatial relation of the UL signal may be determinedbased on at least one transmission parameter associated with a downlink(DL) signal on the same component carrier, so as to not only decreasethe overhead of the higher layer parameter but also align a beambehavior between the DL signal and the UL signal. Note that, the ULsignal comprises at least one of a sounding reference signal, SRS, aphysical uplink shared channel (PUSCH) or a physical uplink controlchannel (PUCCH). In addition, the at least one transmission parametercomprises at least one of a spatial domain filter, a TCI state or aQuasi co-location (QCL) assumption of the DL signal (e.g. physicaldownlink shared channel (PDSCH)).

When the component carrier is configured with at least one controlresource set (CORESET), e.g. in the DL signal, the spatial relation ofthe UL signal is determined based on the TCI state or the QCL assumptionof the CORESET with the lowest index (e.g. identification (ID)) withinthe at least one CORESET on the component carrier. In an example, thespatial relation of the UL signal is determined based on the TCI stateor the QCL assumption of the CORESET with the lowest index within the atleast one CORESET in the most recent monitored DL slot on the componentcarrier, wherein the most recent monitored DL slot is the DL slot withthe at least one CORESET and is no later than the slot on which the ULsignal is configured. The details of determining the most recentmonitored DL slot would be illustrated in subsequent paragraphs.

In an embodiment, the CORESET with the lowest index and the UL signalare associated with the same CORESET pool index or the same CORESETgroup.

In an embodiment, the CORESET can be selected from the one or moreCORESETs with the same CORESET pool index or same CORESET group as theUL signal.

FIG. 4 shows a schematic diagram of a component carrier according to anembodiment of the present disclosure. In FIG. 4 , the component carrierare configured with the CORESETs for each of slots n, n+1 and n+2. Inaddition, the CORESET with the lowest index within the CORESETS in theslot n is the CORESET with the index 0 (i.e. CORESET #0) and a TCI stateTCI_1, the CORESET with the lowest index within the CORESETS in the slotn+1 is the CORESET with the index 1 (i.e. CORESET #1) and a TCI stateTCI_2, and the CORESET with the lowest index within the CORESETS in theslot n+2 is the CORESET with the index 0 and the TCI state TCI_1. Inthis embodiment, the spatial relation of the UL signal is determinedbased on the TCI state of the CORESET with the lowest index in the mostrecent monitored DL slot. Thus, the spatial relation of a SRS SRS_A(i.e. UL signal) in the slot n+1 is determined based on the TCT stateTCI_2 of the CORESET #1 which is the CORESET with the lowest index inthe most recent monitored DL slot to the slot n+1 of the SRS SRS_A.Similarly, the spatial relation of a PUCCH PUCCH_A (i.e. UL signal) inthe slot n+2 is determined based on the TCT state TCI_1 of the CORESET#0 which is the CORESET with the lowest index in the most recentmonitored DL slot to the slot n+2 of the PUCCH PUCCH_A.

In an embodiment, when the component carrier is configured without (i.e.is not configured with) the CORESET, the spatial relation of the ULsignal is determined based on a TCI state with the lowest index withinat least one TCI state activated for the DL signal. In an example, whenthe at least one TCI state for the DL signal is not configured oractivated, the spatial relation of the UL signal is determined based onthe at least one transmission parameter of a CORESET or a PDCCH, whereinthe CORESET or the PDCCH schedules the UL signal.

In an embodiment, when the at least one TCI state for the DL signal isnot configured or activated, the spatial relation of the UL signal isdetermined based on the at least one transmission parameter of a CORESETor a PDCCH, wherein the CORESET or the PDCCH schedules the first uplinksignal.

FIG. 5 shows a schematic diagram of a component carrier according to anembodiment of the present disclosure. In FIG. 5 , the component carrieris configured without the CORESET and the TCI state with the lowestindex within at least one TCI state activated for a PDSCH (i.e. DLsignal) on the component carrier is the TCI state TCI_1. Because thecomponent carrier is not configured with the CORESET, the spatialrelation of UL signals on the component carrier is determined based onthe TCI state TCI 1 which is the TCI state with the lowest index withinat least one TCI state activated for the PDSCH. That is, spatialinformation of a SRS SRS B in the slot n+1 and a PUCCH PUCCH B in theslot n+2 is determined based on the TCI state TCI_1.

In an embodiment, the at least one power control parameter of the ULsignal (e.g. a PUSCH, a PUCCH, or a SRS) is determined without beingconfigured by the higher layer, so as to decrease the overhead of thehigher layer parameters.

When the UL signal comprises at least one PUCCH, the at least one powercontrol parameter being determined comprises at least one of a targetpower (e.g. may be named P0), a closed loop index or a path-loss RS ofthe at least one PUCCH.

In an embodiment, the target power of the at least one PUCCH isdetermined by an entry having one of a specific index (e.g. 0), thehighest index or the lowest index in a target power set.

In an embodiment, the closed loop index of the at least one PUCCH is oneof a specific index (e.g. 0), the highest index or the lowest indexwithin a range of the closed loop index.

In an embodiment, the closed loop index of the at least one PUCCH isdetermined based on a TCI state applied to a CORESET with the lowestindex within at least one CORESET or a TCI state with the lowest indexwithin at least one TCI state activated for a DL signal on the componentcarrier.

In an embodiment of the component carrier of the UL signal beingconfigured with at least one CORESET, the path-loss RS of the at leastone PUCCH is determined based on an RS of a TCI state applied for aCORESET with the lowest index within the at least one CORESET or a QCLassumption for the CORESET with the lowest index within the at least oneCORESET.

In an embodiment, the path-loss RS of the at least one PUCCH isdetermined based on an RS of a TCI state with the lowest index within atleast one TCI state activated for a DL signal (e.g. PDSCH) on thecomponent carrier. In this embodiment, the component carrier may not beconfigured with the CORESET.

In an embodiment, when the UL signal comprises at least one SRS, the atleast one power control parameter being determined comprises at leastone of a target power, a scaling factor (e.g. may be named alpha), apower control adjustment state or a path-loss RS of the at least oneSRS.

In an embodiment, the target power of the at least one SRS may bedetermined based on a SRS resource set, e.g., configured by higher layerparameter(s).

In an embodiment, the scaling factor of the at least one SRS may bedetermined also based on the SRS resource set configured by the higherlayer parameter(s). That is, at least one of the target power or thescaling factor of the at least one SRS is determined based on the SRSresource set configured by at least one higher layer parameter.

In an embodiment, the power control adjustment state of the at least oneSRS is set to be the same with a power control adjustment state of atransmission of a PUSCH on the component carrier.

In an embodiment, when the component carrier is configured with at leastone CORESET, the path-loss RS of the at least one SRS is determinedbased on a RS of a TCI state applied for a CORESET with the lowest indexwithin the at least one CORESET or a QCL assumption for the CORESET withthe lowest index within the at least one CORESET.

In an embodiment, the path-loss RS of the at least one SRS is determinedbased on a RS of a TCI state with the lowest index within at least oneTCI state activated for a DL signal on the component carrier. In thisembodiment, the component carrier may not be configured with theCORESET.

In an embodiment, when the UL signal comprises at least one PUSCH, theat least one power control parameter being determined comprises at leastone of a target power, a scaling factor, a closed loop index or apath-loss RS of the at least one PUSCH.

In an embodiment, the target power of the at least one PUSCH isdetermined by an entry having one of a specific index (e.g. 0), thehighest index or a lowest index in a target power set or a SRS resourceindicator (SRI) PUSCH power control set.

In an embodiment, the scaling factor of the at least one PUSCH isdetermined by an entry having one of a specific index, the highest indexor a lowest index in a scaling factor set or a SRI-PUSCH power controlset, e.g., configured by the higher layer parameter(s).

In an embodiment, the closed loop index of the at least one PUSCH is oneof a specific index, the highest index or the lowest index within arange of the closed loop index.

In an embodiment, the path-loss RS of the at least one PUSCH isdetermined according to a path-loss RS which is associated with a SRSassociated with the at least one PUSCH. Note that, the at least onePUSCH may not configured with the path-loss RS in this embodiment. In anembodiment, the SRS associated with the at least one PUSCH is a SRS usedfor codebook transmission or a SRS used for non-codebook transmission.In an embodiment, when there are more than one SRS resource configuredin the SRS resource set, the association between SRS and the at leastone PUSCH is indicated by the SRS resource indicator (SRI) field in DCI.

In an embodiment, when the path-loss RS (i.e. one of the at least onepower control parameter) is configured for the UL signal, e.g., by thehigher layer parameter, the path-loss RS of the UL signal may beoverwritten by results of determining the path-loss RS of the UL signalaccording to the aforementioned embodiments.

In an embodiment, when a TCI state has a plurality of RS indexes (e.g. 2RS indexes) or a plurality of QCL types (e.g. 2 QCL types), the RS indexassociated with a QCL Type configured for a spatial parameter (e.g. QCLtype D) is used for determining the at least one power control parameterof the UL signal.

The at least one power control parameter of the UL signal may bedetermined without being configured by the higher layer parameter(s) inat least one of the following Embodiments (1) to (5):

Embodiment (1): The UL signal is not configured with the spatialrelation.

Embodiment (2): The UL signal is not configured with the at least onepower control parameter.

In an example of the embodiment (2), at least one of a SRS, a PUSCH or aPUCCH in the UL signal may not be configured with a path-loss RS.

In an example of embodiment (2), the UL signal may comprise at least onePUSCH and a path-loss RS of a SRS associated with the at least one PUSCHis not configured to the wireless terminal.

In an example of embodiment (2), the UL signal may comprise at least onePUSCH and the SRS for a non-codebook transmission or a codebooktransmission is not configured with a path-loss RS.

Embodiment (3): The wireless terminal receives a medium access control,MAC, control element, CE, activation command for activating a TCI stateor receives a configuration command for a TCI state.

Embodiment (4): The wireless terminal receives a MAC CE activationcommand for activating or updating the at least one power controlparameter or receives a configuration command for the at least one powercontrol parameter.

In the embodiment (4), the at least one power control parametercomprises at least one of a target power, a scaling factor or a closedloop index.

Embodiment (5): The wireless terminal receives a signaling configured todetermine the at least one power control parameter for the UL signal.

In the embodiment (5), the signaling may be a higher layer parameter.Furthermore, the higher layer parameter may be one of“enableDefaultBeamForUL” or “enable DefaultPowerControlForUL”.

In an embodiment, when the wireless terminal only supports one active DLor UL beam at a given time, the path-loss RS for at least one PUSCHand/or at least one SRS in the UL signal may be determined based on theaforementioned embodiment if the wireless terminal receives a MAC CEconfigured for updating the path-loss RS for the at least one PUSCHand/or the at least one SRS.

In an embodiment, when the wireless terminal receives a MAC CE forupdating a path-loss RS of at least one PUCCH in the UL signal, thewireless terminal determines the path-loss RS of the at least one PUCCHaccording to the aforementioned embodiments. In this embodiment, spatialrelation of the at least one PUCCH may not be configured.

In an embodiment of carrier aggregation (CA), time units of UL signalson multiple component carriers may collide with each other. For example,a time unit of a UL signal U1 on a component carrier CC_A may collidewith a time unit of another UL signal U2 on another component carrierCC_B. Under such a condition, at least one of the at least one powercontrol parameter or the spatial information of one of the UL signals U1and U2 may be required to change to another one of the UL signals U1 andU2.

In an embodiment, when the time unit of the UL signal U1 on thecomponent carrier CC_A collides with the time unit of the UL signal U2on the component carrier CC_B, one of the UL signals U1 and U2 isprioritized for the UL transmission.

In an embodiment, when the time unit of the UL signal U1 on thecomponent carrier CC_A collides with the time unit of the UL signal U2on the component carrier CC_B, one of the UL signals U1 and U2 isrefrained from the UL transmission.

In an embodiment, the UL signal has a higher priority when correspondingto the component carrier having a smaller (e.g. lower) index. Forexample, when the index of the component carrier CC_A is smaller thanthe index of the component carrier CC_B, the UL signal U1 is prioritized(e.g. has higher priority over the UL signal U2) for the ULtransmissions, and vice versa.

In an embodiment, the UL signal has a higher priority when correspondingto the component carrier having a greater (e.g. higher) index. Forexample, when the index of the component carrier CC_A is greater thanthe index of the component carrier CC_B, the UL signal U1 is prioritized(e.g. has higher priority over the UL signal U2) for the ULtransmissions, and vice versa.

In an embodiment, the component carrier configured with at least oneCORESET has a higher priority than that of the component carrier notconfigured with the CORESET. For example, the component carrier CC_A(i.e. the UL signal U1) has a higher priority when the component carrierCC_A is configured with the at least one CORESET and the componentcarrier CC_B is not configured with the CORESET.

In an embodiment, the component carrier not configured with the CORESEThas a higher priority than that of the component carrier configured withthe at least one CORESET. For example, the component carrier CC_A (i.e.the UL signal U1) has a higher priority when the component carrier CC_Bis configured with the at least one CORESET and the component carrierCC_A is not configured with the CORESET.

In an embodiment, the at least one power control parameter of the ULsignal with lower priority is determined based on the at least one powercontrol parameter of the UL signal with higher priority. For example,when the time unit of the UL signal U1 on the component carrier CC_Acollides with the time unit of the UL signal U2 on the component carrierCC_B and the UL signal U2 has the higher priority because the index ofthe component carrier CC_B is smaller than that of the component carrierCC_A, the least one power control parameter of the UL signal U1 isdetermined based on (e.g. set as) the at least one power controlparameter of the UL signal U2.

In an embodiment, the spatial relation of the UL signal with a lowerpriority is determined based on the spatial relation of the UL signalwith a higher priority. For example, when the time unit of the UL signalU1 on the component carrier CC_A collides with the time unit of the ULsignal U2 on the component carrier CC_B and the UL signal U2 has thehigher priority because the index of the component carrier CC_B isgreater than that of the component carrier CC_A, the spatial relation ofthe UL signal U1 is determined based on (e.g. set as) the spatialrelation of the UL signal U2.

In an embodiment, the UL signal with a higher priority is prioritizedfor the UL transmission. For example, when the time unit of the ULsignal U1 on the component carrier CC_A collides with the time unit ofthe UL signal U2 on the component carrier CC_B and the UL signal U1 hasthe higher priority because the component carrier CC_A is configuredwith the at least one CORESET and the component carrier CC_B is notconfigured with the CORESET, the UL signal U1 is prioritized for the ULtransmission.

In an embodiment, the UL signal with a lower priority refrained from theUL transmission. For example, when the time unit of the UL signal U1 onthe component carrier CC_A collides with the time unit of the UL signalU2 on the component carrier CC_B and the UL signal U2 has the lowerpriority because the component carrier CC_A is not configured with theCORESET and the component carrier CC_B is configured with the at leastone CORESET, the UL signal U2 is refrained from the UL transmission.

Note that, in the aforementioned embodiment, the component carriers onwhich the collided transmissions are configured (e.g. the componentcarriers CC_A and CC_B) are in the same component carrier group and/orin the same bandwidth part.

FIG. 6 shows a schematic diagram of component carriers according to anembodiment of the present disclosure. In FIG. 6 , a component carrierwith an index 1 (i.e. CC #1) is configured with CORESETs and a componentcarrier with an index 2 (CC #2) is not configured with a CORESET. Forthe component carrier CC #2, the first entry having the lowest index ofthe activated TCI states is a TCI state TCI_1. In this embodiment, theUL signal has a higher priority when corresponding to the componentcarrier with the smaller index.

As shown in FIG. 6 , two SRS (i.e. UL signals) SRS_C and SRS_D scheduledat a slot n+1. Because the component carrier CC #1 has smaller index, aspatial relation of the SRS SRS_D is determined based on that of the SRSSRS_C (i.e. TCI state TCI_2). Furthermore, a path-loss RS of the SRSSRS_D is determined based on that of the SRS SRS_C (e.g. a QCL type D RSof the CORSET#1).

In addition, two PUSCHs (i.e. UL signals) PUSCH_C and PUSCH_D collidewith each other at a slot n+2. Note that, the most recent transmissionof a SRS resource which is prior to a PUSCH carrying a SRI is used fordetermining a transmission of the PUSCH. Therefore, the SRS SRS_C andSRS_D are used for determining the transmissions (e.g. beam) of thePUSCH PUSCH_C and PUSCH_D, respectively. Because the spatial relation ofthe SRS SRS_D is determined based on that of the SRS SRS C, the PUSCHsPUSCH_C and PUSCH_D have the same spatial relation, e.g., UL beam, andboth of the PUSCHs PUSCH_C and PUSCH_D can be transmitted simultaneouslyaccordingly.

In an embodiment, the at least one of at least one power controlparameter or spatial relation of the UL signal is determined based on atleast one of transmission parameter of a DL signal on the same componentcarrier.

In an embodiment, the DL signal is determined according to the slotoverlapping the UL signal. For example, the slot overlapping the ULsignal is the latest slot no later than the slot overlapping with the ULsignal. Please refer to FIG. 4 , the SRS SRS_A overlaps the slot n+1which is also the latest slot for the DL transmission no later than theslot overlapping the SRS SRS_A. Thus, the at least one of at least onepower control parameter or spatial relation of the SRS SRS_A isdetermined based on the CORESET #1 (i.e. the DL signal) in the slot n+1.

In an embodiment, the slot overlapping the UL signal may have multipleDL signals (e.g. multiple CORESETs). In this embodiment, the DL signalused for determining the at least one of at least one power controlparameter or spatial relation of the UL signal is the DL signal with thelowest index (e.g. 0) within the DL signals in the slot overlapping theUL signal.

In an embodiment, the UL transmission and the DL transmission may havedifferent subcarrier spacing. Under such a condition, the UL signal(e.g. the slot of the UL signal) may overlap multiple slots of the DLsignals.

In an embodiment, the DL signal used for determining the at least one ofat least one power control parameter or spatial relation of the ULsignal is selected from the first slot or the latest slot within theslots overlapping the UL signal.

In an embodiment, the DL signal used for determining the at least one ofat least one power control parameter or spatial relation of the ULsignal is selected from the first slot or the last slot within the slotsoverlapping the UL signal (e.g. the slot of the UL signal).

FIG. 7 shows a schematic diagram of UL and DL transmissions according toan embodiment of the present invention. In FIG. 7 , the subcarrierspacing of the DL transmission is double of that of the UL transmissionand one UL slot overlaps two DL slots. For example, the subcarrierspacing of the DL transmission may be 120 kHz and the subcarrier spacingof the UL transmission may be 60 kHz. As shown in FIG. 7 , the slot n ofthe UL transmission overlapping a SRS SRS_E overlaps the slots 2 n and 2n+1 of the DL transmission. In an embodiment, at least one of the atleast one power control parameter or the spatial relation of the SRSSRS_E is determined based on the CORESET#0 and/or the TCI state TCI_1 ofthe slot 2 n which is the first slot overlapping with the slot of theSRS SRS_E. In an embodiment, at least one of the at least one powercontrol parameter or the spatial relation of the SRS SRS_E is determinedbased on the CORESET#1 and/or the TCI state TCI_2 of the slot 2 n+1which is the last slot overlapping the slot of the SRS SRS_E. Note that,the slot 2 n+1 is also the latest slot no later than the slot n of theSRS SRS_E.

In an embodiment, the UL signal is transmitted in a slot n, wherein thedownlink signal is transmitted in a slot m, and wherein m is less thanor equal to

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu_{UL}}} \rfloor},$

wherein μ_(DL) is a subcarrier spacing of a DL signal or a DL slot,wherein μ_(UL) is a subcarrier spacing of a UL signal or a UL slot, andwherein μ_(UL) is a bottom function.

In an embodiment, the UL signal is transmitted in the slot n, whereinthe downlink signal is transmitted in the latest slot no latter than aslot

${n \cdot \lfloor \frac{2^{\mu_{DL}}}{2^{\mu}UL} \rfloor},$

wherein μ_(DL) is a subcarrier spacing for a DL signal or a DL slot, andwherein μ_(UL) is a subcarrier spacing for a UL signal or a UL slot, andwherein └ ┘ is a bottom function.

In an embodiment, the aforementioned overlapping may mean fullyoverlapping and/or partially overlapping.

While various embodiments of the present disclosure have been describedabove, it should be understood that they have been presented by way ofexample only, and not by way of limitation. Likewise, the variousdiagrams may depict an example architectural or configuration, which areprovided to enable persons of ordinary skill in the art to understandexemplary features and functions of the present disclosure. Such personswould understand, however, that the present disclosure is not restrictedto the illustrated example architectures or configurations, but can beimplemented using a variety of alternative architectures andconfigurations. Additionally, as would be understood by persons ofordinary skill in the art, one or more features of one embodiment can becombined with one or more features of another embodiment describedherein. Thus, the breadth and scope of the present disclosure should notbe limited by any of the above-described exemplary embodiments.

It is also understood that any reference to an element herein using adesignation such as “first,” “second,” and so forth does not generallylimit the quantity or order of those elements. Rather, thesedesignations can be used herein as a convenient means of distinguishingbetween two or more elements or instances of an element. Thus, areference to first and second elements does not mean that only twoelements can be employed, or that the first element must precede thesecond element in some manner.

Additionally, a person having ordinary skill in the art would understandthat information and signals can be represented using any of a varietyof different technologies and techniques. For example, data,instructions, commands, information, signals, bits and symbols, forexample, which may be referenced in the above description can berepresented by voltages, currents, electromagnetic waves, magneticfields or particles, optical fields or particles, or any combinationthereof.

A skilled person would further appreciate that any of the variousillustrative logical blocks, units, processors, means, circuits, methodsand functions described in connection with the aspects disclosed hereincan be implemented by electronic hardware (e.g., a digitalimplementation, an analog implementation, or a combination of the two),firmware, various forms of program or design code incorporatinginstructions (which can be referred to herein, for convenience, as“software” or a “software unit”), or any combination of thesetechniques.

To clearly illustrate this interchangeability of hardware, firmware andsoftware, various illustrative components, blocks, units, circuits, andsteps have been described above generally in terms of theirfunctionality. Whether such functionality is implemented as hardware,firmware or software, or a combination of these techniques, depends uponthe particular application and design constraints imposed on the overallsystem. Skilled artisans can implement the described functionality invarious ways for each particular application, but such implementationdecisions do not cause a departure from the scope of the presentdisclosure. In accordance with various embodiments, a processor, device,component, circuit, structure, machine, unit, etc. can be configured toperform one or more of the functions described herein. The term“configured to” or “configured for” as used herein with respect to aspecified operation or function refers to a processor, device,component, circuit, structure, machine, unit, etc. that is physicallyconstructed, programmed and/or arranged to perform the specifiedoperation or function.

Furthermore, a skilled person would understand that various illustrativelogical blocks, units, devices, components and circuits described hereincan be implemented within or performed by an integrated circuit (IC)that can include a general purpose processor, a digital signal processor(DSP), an application specific integrated circuit (ASIC), a fieldprogrammable gate array (FPGA) or other programmable logic device, orany combination thereof. The logical blocks, units, and circuits canfurther include antennas and/or transceivers to communicate with variouscomponents within the network or within the device. A general purposeprocessor can be a microprocessor, but in the alternative, the processorcan be any conventional processor, controller, or state machine. Aprocessor can also be implemented as a combination of computing devices,e.g., a combination of a DSP and a microprocessor, a plurality ofmicroprocessors, one or more microprocessors in conjunction with a DSPcore, or any other suitable configuration to perform the functionsdescribed herein. If implemented in software, the functions can bestored as one or more instructions or code on a computer-readablemedium. Thus, the steps of a method or algorithm disclosed herein can beimplemented as software stored on a computer-readable medium.

Computer-readable media includes both computer storage media andcommunication media including any medium that can be enabled to transfera computer program or code from one place to another. A storage mediacan be any available media that can be accessed by a computer. By way ofexample, and not limitation, such computer-readable media can includeRAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic diskstorage or other magnetic storage devices, or any other medium that canbe used to store desired program code in the form of instructions ordata structures and that can be accessed by a computer.

In this document, the term “unit” as used herein, refers to software,firmware, hardware, and any combination of these elements for performingthe associated functions described herein. Additionally, for purpose ofdiscussion, the various units are described as discrete units; however,as would be apparent to one of ordinary skill in the art, two or moreunits may be combined to form a single unit that performs the associatedfunctions according embodiments of the present disclosure.

Additionally, memory or other storage, as well as communicationcomponents, may be employed in embodiments of the present disclosure. Itwill be appreciated that, for clarity purposes, the above descriptionhas described embodiments of the present disclosure with reference todifferent functional units and processors. However, it will be apparentthat any suitable distribution of functionality between differentfunctional units, processing logic elements or domains may be usedwithout detracting from the present disclosure. For example,functionality illustrated to be performed by separate processing logicelements, or controllers, may be performed by the same processing logicelement, or controller. Hence, references to specific functional unitsare only references to a suitable means for providing the describedfunctionality, rather than indicative of a strict logical or physicalstructure or organization.

Various modifications to the implementations described in thisdisclosure will be readily apparent to those skilled in the art, and thegeneral principles defined herein can be applied to otherimplementations without departing from the scope of this disclosure.Thus, the disclosure is not intended to be limited to theimplementations shown herein, but is to be accorded the widest scopeconsistent with the novel features and principles disclosed herein, asrecited in the claims below.

1. A wireless communication method for use in a wireless terminal,comprising: receiving a higher layer signaling, wherein the higher layersignaling is configured to determine a first path-loss reference signal(RS) of at least one physical uplink shared channel (PUSCH) on a firstcomponent carrier, determining the first path-loss RS of the at leastone PUSCH on the first component carrier according to a second path-lossRS associated with a sounding reference signal (SRS), wherein the SRS isassociated with the at least one PUSCH, and transmitting, to a wirelessnetwork node, the at least one PUSCH on the first component carrierbased on the determined first path-loss RS of the at least one PUSCH,wherein the at least one PUSCH is not configured with the firstpath-loss RS.
 2. The wireless communication method of claim 1, whereinthe first component carrier is configured with at least one controlresource set (CORESET), and wherein the second path-loss RS associatedwith the SRS is determined based on a RS of a transmission configurationindicator (TCI) state applied for a CORESET with a lowest index withinthe at least one CORESET.
 3. The wireless communication method of claim1, wherein the first component carrier is configured with at least onecontrol resource set (CORESET), and wherein the second path-loss RSassociated with the SRS is determined based on a Quasi co location (QCL)assumption for the CORESET with a lowest index within the at least oneCORESET.
 4. The wireless communication method of claim 1, wherein thefirst component carrier is not configured with a control resource set(CORESET), and wherein the second path-loss RS associated with the SRSis determined based on a RS of a TCI state with a lowest index within atleast one TCI state activated for a physical downlink shared channel onthe first component carrier.
 5. A wireless communication method for usein a wireless network node, comprising: transmitting, to a wirelessterminal, a higher layer signaling, wherein the higher layer signalingis configured to determine a first path-loss reference signal (RS) of atleast one physical uplink shared channel (PUSCH) on a first componentcarrier, and receiving, from the wireless terminal, the at least onePUSCH on the first component carrier based on the first path-loss RS,wherein the first path-loss RS is determined according to a secondpath-loss RS which is associated with a sounding reference signal (SRS)associated with the at least one PUSCH, and wherein the at least onePUSCH is not configured with the first path-loss RS.
 6. The wirelesscommunication method of claim 5, wherein the first component carrier isconfigured with at least one control resource set (CORESET), and whereinthe second path-loss RS associated with the SRS is determined based on aRS of a transmission configuration indicator (TCI) state applied for aCORESET with a lowest index within the at least one CORESET.
 7. Thewireless communication method of claim 5, wherein the first componentcarrier is configured with at least one control resource set (CORESET),and wherein the second path-loss RS associated with the SRS isdetermined based on a Quasi co location (QCL) assumption for the CORESETwith a lowest index within the at least one CORESET.
 8. The wirelesscommunication method of claim 5, wherein the first component carrier isnot configured with a control resource set (CORESET), and wherein thesecond path-loss RS associated with the SRS is determined based on a RSof a TCI state with a lowest index within at least one TCI stateactivated for a physical downlink shared channel on the first componentcarrier.
 9. A wireless terminal, comprising: at least one processor; anda memory, which is configured to store at least one program; wherein theat least one program, when executed by the at least one processor,enables the at least one processor to perform: receiving a higher layersignaling, wherein the higher layer signaling is configured to determinea first path-loss reference signal (RS) of at least one physical uplinkshared channel (PUSCH) on a first component carrier, determining thefirst path-loss RS of the at least one PUSCH on the first componentcarrier according to a second path-loss RS associated with a soundingreference signal (SRS), wherein the SRS is associated with the at leastone PUSCH, and transmitting, to a wireless network node, the at leastone PUSCH on the first component carrier based on the determined firstpath-loss RS of the at least one PUSCH, wherein the at least one PUSCHis not configured with the first path-loss RS.
 10. The wireless terminalof claim 9, wherein the first component carrier is configured with atleast one control resource set (CORESET), and wherein the secondpath-loss RS associated with the SRS is determined based on a RS of atransmission configuration indicator (TCI) state applied for a CORESETwith a lowest index within the at least one CORESET.
 11. The wirelessterminal of claim 9, wherein the first component carrier is configuredwith at least one control resource set (CORESET), and wherein the secondpath-loss RS associated with the SRS is determined based on a Quasi colocation (QCL) assumption for the CORESET with a lowest index within theat least one CORESET.
 12. The wireless communication method of claim 9,wherein the first component carrier is not configured with a controlresource set (CORESET), and wherein the second path-loss RS associatedwith the SRS is determined based on a RS of a TCI state with a lowestindex within at least one TCI state activated for a physical downlinkshared channel on the first component carrier.
 13. A wireless networknode, comprising: at least one processor; and a memory, which isconfigured to store at least one program; wherein the at least oneprogram, when executed by the at least one processor, enables the atleast one processor to perform: transmitting, to a wireless terminal, ahigher layer signaling, wherein the higher layer signaling is configuredto determine a first path-loss reference signal (RS) of at least onephysical uplink shared channel (PUSCH) on a first component carrier, andreceiving, from the wireless terminal, the at least one PUSCH on thefirst component carrier based on the first path-loss RS, wherein thefirst path-loss RS is determined according to a second path-loss RSwhich is associated with a sounding reference signal (SRS) associatedwith the at least one PUSCH, and wherein the at least one PUSCH is notconfigured with the first path-loss RS.
 14. The wireless network node ofclaim 13, wherein the first component carrier is configured with atleast one control resource set (CORESET), and wherein the secondpath-loss RS associated with the SRS is determined based on a RS of atransmission configuration indicator (TCI) state applied for a CORESETwith a lowest index within the at least one CORESET.
 15. The wirelessnetwork node of claim 13, wherein the first component carrier isconfigured with at least one control resource set (CORESET), and whereinthe second path-loss RS associated with the SRS is determined based on aQuasi co location (QCL) assumption for the CORESET with a lowest indexwithin the at least one CORESET.
 16. The wireless network node of claim13, wherein the first component carrier is not configured with a controlresource set (CORESET), and wherein the second path-loss RS associatedwith the SRS is determined based on a RS of a TCI state with a lowestindex within at least one TCI state activated for a physical downlinkshared channel on the first component carrier.